A new study gives some reason to believe that wind turbines have secondary effects on bat mortality compared to other anthropogenic factors like intentional killing, accidents, and the imported fungal disease called White Nose Syndrome. (rabett.blogspot.ru)
-- 1750 - 2000 BIG impact from CO2 (1.65 W / m ^ 2); other anthropogenic factors cancel one another our; negligible impact from natural (solar)(0.12 W / m ^ 2) over 250 years. (judithcurry.com)
These include other anthropogenic factors such as increased industrial aerosols and ozone depletion, as well as natural changes in solar radiation and volcanic aerosols, and the cycle of El Niño and La Niña events. (theconversation.com)